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Umbilicaria deusta (L.) Baumg., 1790

Common name Peppered Rock Tripe
Code UMBIDEU
Field Characters Round, irregular lobes 5-10 cm in diameter, thin and fragile. Often forming large colonies of overlapping thalli. Upper and lower cortices dark brown to black, lower surface smooth to irregularly pitted. Lacking rhizines. Isida present, laminal on the upper cortex, granular to occasionally minutely squamulose. Soredia lacking. Apothecia unknown.
Similar species & genera
None. This is the only isidiate Umbilicaria in Alberta.
Ecology Known largely from the shield region of Alberta, with a single collection from Banff National Park in the Rocky Mountains region (Consortium of Lichen Herbaria 2024). Saxicolous on noncalcareous rock.
Chemistry
Molecular support
Links
Gallery See links above

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Lichens of Alberta Copyright © by Diane L. Haughland is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License, except where otherwise noted.